<?php
$t1 = microtime(true);

$names = array(
          'Andrew',
          'John',
          'Peter',
          'nsastin',
          'Bill');
$output = preg_grep('/^[^A-N]/', $names);
print_r( $output );
$t2 = microtime(true);

echo "\n\n".($t2 - $t1)." miliseconds" ;
